Re: Wired NIC bridged through WLAN AP doesn't auto-connect

[Dan Williams <dcbw redhat com>]

On Tue, 2008-02-05 at 21:05 +0100, Steinar Bang wrote:
> Platform: Intel Celeron,
> 	  Ubuntu 7.10,
> 	  linux-image-2.6.22-14-generic  2.6.22-14.51
> 	  network-manager                0.6.5-0ubuntu16.7.10.0
> 	  network-manager-gnome          0.6.5-0ubuntu10
> 
> I have an ubuntu 7.10 machine that has a wired NIC.  This wired NIC is
> connected to a WLAN that is set up for bridging with another AP
> connected to my home LAN.
> 
> If I log into the Ubuntu machine, the nm-applet wired icon is displayed
> with a white-x-on-red marking its disconnected state.  If I right click
> the icon and select the "Wired network" (which is always initially
> unchecked), the icon starts spinning, and eventually shows up as
> connected. 
> 
> The wired NIC is set up as "Roaming".
> 
> Does anyone have an idea why the "Wired network" isn't initially enabled
> when logging in?

What hardware is the wired NIC?  It could be that your NIC doesn't
support carrier detection, at which point NetworkManager will not
automatically bring the NIC up because it has no way of knowing if a
cable is plugged in or not.

The driver the NIC uses is also important to know.  If it's a
PCI/CardBus card, the PCI device and vendor ID are useful, same for a
USB ethernet dongle.  For PCMCIA, 'lspci' or 'cardctl info' are what's
needed here.

Dan


> Does anyone have any theories?  Could it be because the connection is
> through the bridged AP?  Could it be because the (presumably old) NIC on
> the machine has a problem detecting a network connected state from the
> AP?
> 
> Could it be because of a network manager setting?  I have googled and
> read the logs, but I don't really know where the problem might be, so
> I'm flailing about in the dark.
> 
> So... any hints, guesses, documentation pointers etc. are welcome!
> 
> Thanx!
> 
> 
> - Steinar
> 
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